I am a Windows 7 64-bit user and decided to install Ubuntu 14.04 on a separate hard drive. Everything went perfectly until I wanted to boot Windows again. I was not able to do it even though I entered the BIOS and it still recognizes the Windows hard drive (and I can see the Windows files from Ubuntu).
I tried unplugging the Ubuntu hard drive, and it says the machine needs a device to boot from.
Is there anything I can do to fix this and have both operating systems on separate hard drives? Thanks.